* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

li {
    list-style-type: none;
}

a {
    color: #000;
    text-decoration: none;
}

.clearfix:before,.clearfix:after {
    content: "";
    display: table;
}

.clearfix:after {
    clear: both;
}